moran



(Nd Model.)

' 2 Sheets-Sheet 1. T. W.- MORAN.

RELIEF VALVE FOR STEAM PIPES. I

Patented June 27, 1893.,

2 Sheets- Sheet 2.

' (No Model.)

T. W. MORAN. RELIEF VALVE FOR STEAM PIPES.

Patented June 27, 1893.

Noam: PETERS 5a.. PHUTQLITHQ, wAsfimcmx o c UNITED STATES PATENT OF ICE.

THOMAS WILLIAM MORAN, OF LOUISVILLE, KENTUCKY, ASSIGNOR TO THE MORANFLEXIBLE STEAM JOINT COMPANY, OF SAME PLACE.

RELIEF-VALVE FOR-STEAM-PIPES.

SPECIFICATION forming part of Letters Patent No. 500,505, dated June2'7, 1893.

Application filed November 26, 1892. Serial No. 458,245. (No model.)Patented in England January 14, 1892, 110.151; in France January 14,1892, No.'218,675; in Belgium January 14, 1892, No. 97,925, and inGermany Ja a y 14, 1892, No.

To all whom it may concern:

Be it known that I, THOMAS WILLIAM Mo- RAN, a citizen of the UnitedStates, and a resident of Louisville, in the county of J efferson 5 andState of Kentucky, have invented certain new and useful Improvements inRelief- Valves for Steam-Pipes, (for which I have obtained patents asfollows: in Great Britain, No. 151, dated January 14, 1892; in France,

No. 218,675, dated January 14, 1892; in Belgium, No. 97,925, datedJanuary 14, 1892, and in Germany, No. 65,277, dated January 14, 1892 5)and I do declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same, reference being hadto the accompanying drawings, and to letters of reference markedthereon, which form a part of this specification.

Figure 1 of the drawings is a perspective of the valve. Fig. 2 is avertical longitudinal section of same. Fig. 3 is a section on line x mFig. 2. Fig. 4 is a section on line w to Fig.

3. Fig. 5 is a detail view of valve and stem,

, and Fig. 6 is a sectional detail of the bearing lug. This inventionhas relation to relief valves especially adapted for use in connectionwith .30 steam heating pipes of railway cars, and it consists in thenovel construction and combination of parts as hereinafter specified.

In the accompanying drawings, the letter A designates the valve casinghaving at one end the threaded cylindrical opening or aperture a forconnection with the train pipe A.

This opening leads into a chamber B in one side of the casing, separatedby a partition wall b from a chamber 0 in the opposite side.

40 In this partition is a steam port a communieating with both chambers,and having formed therein, on the side of the chamber 0, a sphericallybeveled valve seat 0'. Leading outwardly from the chamber 0 is athreaded ap- 5 erture D in which is held a bearing plug D.

Leading outwardly from the chamber B is a port I) communicating with athreaded aperture E, to which may be connected apipe section or elbow E.

In the forward wall of the chamber 0 is a port F, which communicateswith an elbow portion F, to which is connected a vertical portion F ofthe steam pipe coupling sections.

G is a valve stem, which projects outwardly through the bearing plug Dand provided at its outer end with a hand wheel, or other operatingmeans. Said stem has a male threaded portion g, engaging a correspondingfemale threaded portion gof the aperture d in the bearing plug throughwhich it passes. Below the threaded portion g, said stem carries a ValveH, which consists of the segment of a sphere, grooved or cut away at itscentral portion. One end of this valve is adapted to fit the seat 0,while the other end fits a concave or spherically beveled seat 71. inthe lower end of the bearing plug. The inner end of the stern carries asecond, but smaller valve I, adapted to seat in and close the port I),leading into the aperture or chamberE. Extend- 7o ing outwardly from theseat h in the bearing plug are the grooves or ways h which communicatewith an enlarged portion 2' of the aperture d, from which leads therelief aperture 7;. 5

When the stem is screwed outwardly to open the port 0, and permit thepassage of steam, into the casing and through the pipe sections, theupper end of the valve H will seat in the bearing plug, preventing theentrance of any steam thereto. At the same time the valve I will seat inand close the port I). .When however the valve H is screwed down toclose the port 0', the said valve is carried away from its seat in thebearing plug. At the same time, the valve I is carried through into theaperture E, and the port 5 is opened. In this position, any steamremaining in the coupling when the valves are closed is allowed toescape, relieving the pipe 0 or hose sections of unnecessary pressure.

The aperture E, and the elbow E are provided, in case it is desired toeffect a coupling with a car fitted with a difierent system ofcouplings, not adapted for connection with 5 the elbow F. In this casethe port a is closed by the valve H, the port I) being open, the steampassing from the chamber 13 through said port b or vice versa.

On the opposite end of the casing from the connection a for the trainpipe may be provided the arms 70, between which is secured a bracket orbrace L secured to the car frame, and forming the support for the saidcasing. The lower end of the bolt Zwhich secures the bracket or brace Lon the arms k, may be provided with an eye m, to provide for theconnection thereto of the upper end of the slack or tripping chain ofthe coupling.

The various parts may be provided with Wrench seats as shown, in orderto permit their ready connection and disconnection.

The lower end of the elbow F may be provided with apertured lugs or carsn, through which may be passed pins or bolts n, which engage lugs orgrooves 19 in the pipe section F to prevent the coupling fromunscrewing. By means of the segmental spherical valve and thecorresponding beveled seats therefor, perfectly steam tight joints areprovided.

Having described this invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. The relief valve, comprising the casing A, having the opening a forconnection with an inlet pipe, a chamber B into which said openingleads, a second chamber 0, a port 0 plug D, said stern carrying a doubleseating valve H, and a second valve I, and an escape passage throughsaid bearing plug, substantially as specified.

2. In a relief valve, the combination with the casing having thechambers B and 0 connected by a port 0, having a spherically beveledvalve seat a, the inlet a, and outlet F, the elbow E, the port 12'leading from the chamber B into said elbow, and the bearing plug Dhaving a threaded opening therein and a relief passage, and aspherically beveled valve seat h, of the valve stem having a seat insaid threaded opening, the double seating spherically beveled valvecarried by said stem, and the valve I also on said stem, substantiallyas specified.

In testimony whereof I affix my signature in presence of two witnesses.

THOMAS WILLIAM MORAN.

Witnesses:

O. Q. MARTIN, ORTON T. MORAN.

